Jar-closure



C. H. SPOONER.

JAR CLOSURE.

APPLICATION FILED JULY 9., 191a.

Patnted Aug. 31,1920.

35 nally or externally placed about-the mouth JUNITED STATES PATENTOFFICE.

CHARLES HORACE SPOONIEIR, F CHARLESTOWN, NEW HAMPSHIRE.

4 mn crosunn.

To all whom it may concern:

Be it known that I, CHARLES H. SPOONER, a citizen of the United States,residing at Charlestown, in the county of Sullivan, State F of NewHampshire, have invented a new and useful J ar-Closure; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same. I

Thisxinvention relates to an improved jar closure, whereby jars, bottlesand the like may be securely sealed when preserving.

One of the objects of the invention is to effect the closure of jars andlike containers by means of a single piece appliance in conjunction witha flexible sealing ring.

' the 'top of the closin flat and of an outside A further object is toinsure quick action, in the final closing of the receptacle and quickaction in the releasing of the seal when it is desired to open the jar.

A further object of "the invention is to make easy the act of andmaintenance of sterilization in products best prepared by placing themin the receptacle before cookmg.v

A. further object of the invention is to provide an-improved closure, ofsuch char-.

i I ers whether filled or emptied.

The first three results or objects may be attained by screw meansconsisting of sextantally interrupted threads, either interof thecontainer, the last object by making element essentially 'ameter equalto that of the container itself.

A further object of the invention is the provision of means between thecontacting parts of the jar and the closure to prevent excessivespreading of the sealing ring.

In practical fields the details of construction may necessitatealterations falling within the scope of what is claimed.

I The invention comprises further features and combination of parts ashereinafter set forth shown in the drawings and claimed.

In the drawings Figure 1 is a sectional view through the top? of apreserving jar or container.

ig. 2 is a sectional view'through the closure for the jar in Fig. 1.

Specification of Letters Patent. Patented Aug. 31, 1920. Applicationfile d my 9,1918. Serial No. 244,095.

Fig. 3 is a the closure.

Fig.4 1s an edge-elevation of the closure.

plan view of the jar without Fig. 5 is a sectional view through theupper open end of the jar showing the threaded connections externallyarran ed.

without its closure.

Fig. 8 is an edge View of the closure in 6. r eferring more especiallyto the drawings -1 designates themouth end of a jar, the

inner wall of which is provided with threads? which are interruptedsextantally. For instance the threads are divided into sextants, threeof which have threads 2, and three others or spaces .3-without threads.In other words the threads are cutaway or interrupted at threeintervals, and 4 denotes a suitable closure, comprising a body 5provided with a circular flange 6. .The. cylindrical face of the body isprovided with threads interrupted sextantally, the 'sextants of threads7 adaptedto enter the cutaway space 3 of the interior of the mouth endof the jar, so that by imparting a partial turn to the closure saidthreads 7 may interengage the sextants of threads of the jar.

When inserting the closure the sextants of threads 2 will enter thesextants or cutaway spaces 8 of the closure. The marginal edge of themonth end of the jar is provided with an annular recess 9, the bottom ofwhich is inclined, for the reception of the sealing rlng of any suitablematerial preferably rubber. The bottom of the flange 6 of the closurehas an extension 10 the under face of which is inclined to engage therubber seallng ring (not shown). The inclined faces of the parts 9 and10 are provided, so

as to prevent outward bulge of the sealing ring. The threads 2 and 7 areV-shaped. In Figs. 5, 6 and 7 the threads 2 are square. or rectangularin cross section, and the sextant spaces?) are externally arranged onthe jar. The threads 7 and the cutaway spaces or sextants 5" oftheclosure 11 are internallyarranged. In such structure of jars andclosures the upper marginal edge of the jar in Fig. 7 is inclined asshown at 12, for the reception ofthesealing ring of rubber (not shown).The portion" 14:- of the closure 11 is designed to engage the sealingring and hold it against the inclined portion 12, and the flange 13extends into the cavity 15 of the closure 11.

In using this particular device the cover is 5 easily'placed in theinitial position, with the threads of the closure engaging the sextantsor spaces 3, and then by imparting a partial turn to the closure orcover the threads of the cover or closure may quickly mesh with those ofthe jar mouth, turning the closure or cover one sixth of a revolution tothe final seal. Fruits or vegetables requiring to. be placed in the jarscold, the

cover may be at once placed'inthe initial position and allowed to soremain until sterilization is completed and then quickly turned to finalposition, thereby preventing air or any deleterious element fromentering.

The invention having been set forth what is claimed as new and useful isThe comb'nation with a ]3.1' having a mouth end provided with interiorinterrupted threads, of a closure comprising a body fitting into themouth end and provided with interrupted threads to engage the threads ofthe interior of the mouth end, the

marginal edge of the month end having an annular recess, said annularrecess inclining inwardly and downwardly and having lts lnner wallsubstantlally vertical, the body of the closure having an annularflange, said annular flange on its under face being provided with anannular recess, which annular recess inclines inwardly and upwardly, an

annular recess concentric with the recess of 'the under face of theflange and adjacent downwardly and inwardly and upwardly. In testimonywhereof I ha'vesigned my name to this specification in the presence oftwo subscribing witnesses.

v CHARLES HORACE SPOONER. Witnesses:

MAUDE A. WoRTHLEY, F. MARION WORTHLEY.

